MAX3186EAP Просмотр технического описания (PDF) - Maxim Integrated
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MAX3186EAP Datasheet PDF : 8 Pages
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±15kV ESD-Protected, EMC-Compliant, 230kbps
RS-232 Serial Port for Modems
______________________________________________________________Pin Description
PIN
1
2, 4, 7, 8, 9
3, 5, 6
10
11
12, 13, 14, 17, 19
15, 16, 18
20
NAME
FUNCTION
VDD
Supply-Voltage Input, +10.8V to +13.2V
T1OUT–T5OUT
Transmitter Outputs, swing between VDD and VSS
R1IN, R2IN, R3IN
Receiver Inputs
VSS
Supply-Voltage Input, -10.8V to -13.2V
GND
Ground. Connect to system ground.
T5IN–T1IN
Transmitter Inputs
R3OUT, R2OUT, R1OUT Receiver Outputs, swing between GND and VCC
VCC
Supply-Voltage Input, +4.5V to +5.5V
RC 50M to 100M
RD 330Ω
CHARGE-CURRENT
LIMIT RESISTOR
DISCHARGE
RESISTANCE
HIGH-
VOLTAGE
DC
SOURCE
Cs
150pF
STORAGE
CAPACITOR
Figure 1a. IEC1000-4-2 ESD Test Model
I
100%
90%
DEVICE
UNDER
TEST
_______________Detailed Description
±15kV ESD Protection
As with all Maxim devices, ESD-protection structures
are incorporated on all pins to protect against electro-
static discharges encountered during handling and
assembly. The MAX3186 driver outputs and receiver
inputs have extra protection against static electricity
found in normal operation. Maxim’s engineers devel-
oped state-of-the-art structures to protect these pins
against ESD of ±15kV, without damage. After an ESD
event, the MAX3186 continues working without latchup.
ESD protection can be tested in several ways. The
transmitter outputs and the receiver inputs are charac-
terized for protection to the following:
1) ±15kV using the Human Body Model
2) ±8kV using the Contact-Discharge Method specified
in IEC1000-4-2 (formerly IEC801-2)
3) ±15kV using the Air-Gap Method specified in
IEC1000-4-2 (formerly IEC801-2)
ESD Test Conditions
ESD performance depends on a number of conditions.
Contact Maxim for a reliability report that documents
test setup, methodology, and results.
10%
tr = 0.7ns to 1ns
30ns
t
60ns
Figure 1b. IEC1000-4-2 ESD Generator Current Waveform
_______________________________________________________________________________________ 5
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